An observational study in Idiopathic Pulmonary Fibrosis and Progressive Pulmonary Fibrosis, sponsored by Shanghai Pulmonary Hospital, Shanghai, China. Recruiting at 1 site in China. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-09-15.
Sponsored by Shanghai Pulmonary Hospital, Shanghai, China · Observational
The goal of this observational study is to learn about the inspiratory flow rate capability in patients with pulmonary fibrosis (IPF or PPF) when using inhaler devices with different resistances. The main questions it aims to answer are:
What is the peak inspiratory flow rate (PIFR) that patients with pulmonary fibrosis can achieve through a medium-resistance inhaler device?
What is the peak inspiratory flow rate (PIFR) that patients with pulmonary fibrosis can achieve through a high-resistance inhaler device?
What is the inspiratory time (EIT) for each resistance level?
Participants will use a portable device called In-Check™ DIAL G16, which simulates the resistance of different dry powder inhalers. Each participant will perform two breathing tests at a medium-resistance setting and two breathing tests at a high-resistance setting, with a 2-minute rest between settings. The device measures how fast air is breathed in and how long each breath lasts.
This study will enroll 60 patients diagnosed with IPF or PPF at Shanghai Pulmonary Hospital. Participants will be involved for approximately 30 to 60 minutes, including training on how to use the device and the breathing tests. The study involves no drugs or invasive procedures.
576 studies on the registry are indexed under Idiopathic Pulmonary Fibrosis; 123 are open to participants now.
This study's planned enrollment of 60 is below the median of 152 across 165 observational studies indexed under Idiopathic Pulmonary Fibrosis.
Browse Idiopathic Pulmonary Fibrosis studies →Shanghai Pulmonary Hospital, Shanghai, China is the lead sponsor of 160 studies on the registry; 95 are open to participants now.
Counted across the registry records on this site, refreshed daily.
A total of 60 patients with pulmonary fibrosis (IPF or PPF) diagnosed according to the ATS/ERS/JRS/ALAT 2022 guidelines will be enrolled at Shanghai Pulmonary Hospital. Eligible participants are aged 18-80 years, either sex, with FVC ≥ 45% of predicted and DLCO > 25% of predicted within 2 months before screening. All participants will perform inspiratory flow tests at medium and high device resistances.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients aged 18-80 years with a diagnosis of idiopathic pulmonary fibrosis (IPF) or progressive pulmonary fibrosis (PPF) according to the ATS/ERS/JRS/ALAT 2022 guidelines. Participants will perform inspiratory flow tests using the In-Check™ DIAL G16 device at both medium-resistance and high-resistance settings. No investigational drug or intervention is administered.
Peak Inspiratory Flow Rate (PIFR) at Medium Device Resistance
Peak inspiratory flow rate (PIFR, L/min) will be measured using the In-Check™ DIAL G16 device at the medium-resistance setting. Each participant will perform two breathing tests at this setting. The mean PIFR of the two valid measurements will be recorded.
Time frame: Single visit (approximately 30-60 minutes)
Peak Inspiratory Flow Rate (PIFR) at High Device Resistance
Peak inspiratory flow rate (PIFR, L/min) will be measured using the In-Check™ DIAL G16 device at the high-resistance setting. Each participant will perform two breathing tests at this setting. The mean PIFR of the two valid measurements will be recorded.
Time frame: Single visit (approximately 30-60 minutes)
Inspiratory Time (EIT) at Medium and High Device Resistances
Inspiratory time (EIT, seconds) will be measured using the In-Check™ DIAL G16 device at two resistance settings: medium resistance and high resistance. Each participant will perform two breathing tests at each resistance setting. The mean EIT of the two valid measurements at each resistance level will be recorded and compared between the two settings.
Time frame: Single visit (approximately 30-60 minutes)
Plan to share: Undecided
No publications or documents are linked to this record.
Started Jan 2026 (actual). Primary completion is estimated for Dec 2026, 11 months after the start.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Idiopathic Pulmonary Fibrosis →
Shanghai Pulmonary Hospital, Shanghai, China →